US3575671A
Expired / Lapsed
US
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High power monomode laser structure with multiple coupled cavities
Assignee: Alcatel Lucent SAS
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Filing: 1969-02-12
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Granted: 1971-04-20
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Expires: 1989-02-12
Abstract
Abstract Single-mode laser energy structure comprising a main cavity and a secondary cavity coupled to the main cavity and formed by a prismatic unit, either disposed in the main cavity containing a laser tube or attached to the laser tube itself.
Inventors
- 👤 Benjamin Dessus
- 👤 Rene Lenfant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:48
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/034; H01S3/10; H01S3/13; H01S3/139
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
In a power monomode laser generator including a first linear Fabry-Perot cavity containing a laser tube and defined by a first mirror and a second mirror, a second cavity formed by the said first mirror and a third mirror and coupled with the first cavity by means of a semireflecting plate disposed on the axis of the first cavity. The improvement wherein said semireflecting plate is kept at Brewster incidence in the said first cavity by a prismatic element comprising two passages, the first passage of which is disposed in alignment with the passage of the said laser tube, the second passage of which has for its axis the portion of the said second cavity adjacent the third mirror, and the axes of the said prismatic element passages converge on said semireflecting plate.
Claim 2
Dependent Claim
133 words
In a power monomode laser generator including a first linear Fabry-Perot cavity containing a laser tube and defined by a first mirror and a second mirror, a second cavity formed by the said first mirror and a third mirror and coupled with the first cavity by means of a semireflecting plate disposed on the axis of the first cavity. The improvement wherein said semireflecting plate is kept at Brewster incidence in the said first cavity by a prismatic element comprising two passages, the first passage of which is disposed in alignment with the passage of the said laser tube, the second passage of which has for its axis the portion of the said second cavity adjacent the third mirror, and the axes of the said prismatic element passages converge on said semireflecting plate.
Claim 3
Dependent Claim
23 words
The laser generator according to claim 1 wherein one of the said second and third mirrors is fixed to the first prismatic element.
Claim 4
Dependent Claim
29 words
The laser generator according to claim 1 wherein one of the said second and third mirrors is fixed to the first prismatic element by means of a piezoelectric transducer.
Claim 5
Dependent Claim
39 words
The laser generator according to claim 3, wherein said transducer is connected to the output of a controlling signal generator connected to a control photodetector positiOned in the path of at least one part of the emergent laser beam.
Claim 6
Dependent Claim
46 words
The laser generator according to claim 1, wherein said semireflecting plate, disposed on the prismatic element, is fixed to the end of the laser tube, and this tube also comprises an outlet passage for the beam which is disposed as the extension of the second passage.
Claim 7
Dependent Claim
23 words
The laser generator according to claim 5, wherein the exit passage for the beam is closed by a plate situated at Brewster incidence.
Claim 8
Dependent Claim
19 words
The laser generator according to claim 1, wherein the semireflecting plate forms the outlet plate of the laser tube.
Claim 9
Dependent Claim
36 words
The laser generator according to claim 1, further including at least one ball and socket joint which articulately joins the laser tube with the remainder of the generator body carrying the mirrors of the Fabry-Perot cavities.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |